Business Table Edit Dialog - very slow

PME 3.6GA

I have a metadata model I've been using & editing for some time. As far as I can tell, it is working well - all my PRD reports run on the BI Server machine with the modified .xmi file, as do Ad-Hoc reports.

When I right-click to edit a business table, the PME application becomes unresponsive for a long time (several minutes) before the edit dialog comes up. My PC is not RAM constrained or CPU bound during this delay (2.7GB of 4, 6-8% CPU use).

Once the Business Table Properties dialog is open, clicking between fields is also unbearable slow (literally it takes minutes to change selected column).

I imported one of the sample .xmi files, and can edit those business tables with little or no delay before the edit dialog boxes appear.